ringAround

let a=0,b=0;
function setup(){
  cnv=createCanvas(windowWidth,windowHeight)
  background(20)
  stroke(255)
  noFill()
  strokeWeight(0.05)
}
function draw(){
  background(100,140,180)
  t=frameCount/100
  translate(width/2,height/2);
    rotate(t/10)
  for(let i=-9;i<=9;i++){
   conchoid(a+i)
    conchoid(a+i)
  }
  a=12*sin(t);
  b=10*cos(t/100);
}
function conchoid(a){
  beginShape();
  for(let i=0;i<156;i++){
    y=width/100*(1/cos(i)+a*sin(i)+b*cos(i*b))*tan(i);
    x=width/100*(1/tan(i)+b*sin(i))*tan(i);
    vertex(x,y)
  }
  endShape() 
}